There is eight key elements of Python

1. Data type

2. Variant

Grammer:objectreference = value

' = ' means bind a variant with object in memory.

Variant name is case sensitive in Pyhon.

3. Combination data type

Major types is meta and list

Meta is fixed.

List is changable.

#x. Append (XXX) = = List.append (x, ' xxx ')

There is the methods in Python. As following.

functionname (arguments)

Objectname.methodname (arguments)

4. Logical operator

Sometimes "is" would give you a different result. In fact. Its compared with memory object.

0<=a<=10 equal a>=0 and a<=10

"In" was better used in Dict

5. Control

A.
If Boolean_expression1:

Suite1

Elif Boolean_expression2:

....

Else

Else_suite

B.

While Boolean_expression:

Suite

C.

For variable in iterable:

Suite

6. Mathmatic

List must use Iterable object.

e.g. seeds+=5 # would get error

SEEDS+=[5] #correct

7. IO

Try

...

Except ValueError as err:

Print (ERR)

Continue

Except Eoferror:

Break

8. function

def functionname (Argument1,a2,a3 ...):

Suite

There is eight key elements of Python